Discussion

Simon, https://github.com/w3c/sdw/pull/572 : Indeed, there was no connection between FeatureOfInterest and ObservableProperty in SOSA because that would have involved establishing something akin to the ISO 19109 General Feature Model, which is way beyond the scope of SOSA. It would also have likely involved either rdfs semantics (domain and range) or OWL semantics (owl:Restriction) which we agreed would not be used in SOSA.

Jano, https://github.com/w3c/sdw/pull/572 : Yes and let us not flood SOSA with more and more features otherwise we give up one the major design goal of being minimal and easy to use in the first place.